Consider the following activities:Spraying pesticides on a crop fieldInspecting the craters of activ

Question

Consider the following activities:Spraying pesticides on a crop fieldInspecting the craters of active volcanoesCollecting breath samples from spouting whales for DNA analysisAt the present level of technology, which of the above activities can be successfully carried out by using drones?

Accepted Answer

Drone technology has been used by defense organizations for quite some time. However, the benefits of this technology extend well beyond just these sectors, including:Emergency responseHumanitarian reliefHealthcareDisease controlWeather forecastingRecently, Australian scientists used drones (that flew 200 metres above the blowholes of whales) to collect the mucus of whales from their water sprays to examine their health. The whale spray collected by a drone contains DNA, proteins, lipids, and types of bacteria. Hence, option 3 is correct.Drones have also been used to study the craters of active volcanoes to know about their recent activities, a place which human beings cannot directly access. Hence, option 2 is correct.Recently, the use of drones to spray pesticides (in Telengana) was in the news. It is considered illegal in India. But in the US, it is legally practiced in many states. Hence, option 1 is correct.Hence, option (d) is the correct answer.